On image reconstruction with the two-dimensional interpolating resistive readout structure of the Virtual-Pixel detector

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• 作者：Wagner ; H. ; Orthen ; A. ; Besch ; H.J. ; Martoiu ; S. ; Menk ; R.H. ; Walenta ; A.H. ; Werthenbach ; U.
• 关键词：29.40.Gx ; 02.60.Cb ; Two-dimensional interpolating resistive readout structure ; Position reconstruction ; Algorithms ; Spatial resolution ; Population density
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2004
• 出版时间：May 11, 2004
• 年：2004
• 卷：523
• 期：3
• 页码：287-301
• 全文大小：1.62 M

文摘

The two-dimensional interpolating readout concept of the Virtual-Pixel detector (ViP detector) goes along with an enormous reduction of electronic channels compared to pure pixel devices. However, the special concept of the readout structure demands for adequate position reconstruction methods. Theoretical considerations reflecting the choice and the combination of linear algorithms with emphasis on correct position reconstruction and optimised spatial resolution are presented. A subsequent two-dimensional coordinate transformation further improves the image response of the system. Measured images show how far the theoretical predictions of the simulations can be verified and to what extent they can be used to improve the position reconstruction.